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LG Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
LG32LV5500
TV doesn't turn on, no stand by, LED doesn't light up, no 3.5vPower supply board, IC501 pin 7 oscillating between 10v and 12v, no 3.5v voltage, RL101 inoperative, D201 shortedReplace d201 (sb560)Wellington Uemura
LG32LV5500
When touching the metal part of the TV, the person receives an electrical discharge as if they touched the mains socket.C603 with leak.Replace c603 with an equivalentWellington Uemura
LG32LJ600B
So em stand byReflow in the processor successfully resolvedcristiano manutec
LG42PN4600
42PN4600
Image with pigmentation, cloudsBoth 8a60 rescheduled pieceRemove from scrapJOHNATAN
LG14CB
Almost closed verticalC311 1000/25Fábio boysinnn
LGW1642S
Doesn't startRewrite eepromRewrite eeprom
LG42LG6000
Loose scratches in the imageThe problem is in the two 100uf smd capacitors on the board between the t-con and the mainboard (c403 and c398). the capacitors are both in the lower right corner of the board. just replace these capacitors and the problem will be solved.Shakti
LG14FK3RB
Does not come out of standby, 91k resistors ok, I measured the 5 volts on the ic803, I measured the ic806, it did not release the 9 volts, due to the micro not releasing tension on pin 29, I soldered a 10k resistor on pin 4 to pin 1 of the ic 806 TV turned on but with the image distorting, I concluded that it was one of the crystalsO cristal x502(32.768I replaced the x502 crystal (32.768) and removed the resistor that I placed on the ic806 and the TV was okDTEC-ELETRONICA-Massapê-ce
LG21FJ8RL
EAX5773090614
After about 10 minutes on, the image started to shake and tsound was a cricket-like noise in the transformer.After testing everything, the defect was the broken strw 6554aJr eletrônica
LG42LF6500
LED current reductionChange r816, check if you have r817, just put a 3r3 resistor in seriesreginaldo moronte, eletronica junior caldas novas
LG42LK450
Panel lights up but no imageDefect in tcom c305 short.
LG26LH20R-LA/TA
LP91A
Normal image but no sound on all inputs.1.8v supply filteringChanging the 3 smd capacitors next to the audio output c600, c604 and c610André Paz
LG50PN4500
Stand by lights up but tv doesn't turn onAll voltages ok, standby turns on, TV doesn't turn on,Transitor q604 (x7ua) with problem, replaced and resolvedValclei Ribeiro
LG 42PT350B
PB12K
TV doesn't turn on ONLY LED stand byTV has a low 3.3 power supply on the main board, this 3.3 power supply had 2.1 voltsReplace the 3.3 ic 602 regulator icJOSIVAN
LG32LK330
TV with stand-by blinking continuouslyIc401 z1072ai shorted c472 c476 with leakReplace themalexandre felipe
LG42PT250
Burning the traffic on the v sus card as soon as it turns onThis problem is caused by the ysus board, even though everything is fineCabeça
LG42PT250
League without imageAfter it cools down, the TV turns on with all voltages, but without an image, the control also does not work after it turns on.Replace the main board or reflowCabeça
LGCM4450
Short in power supplyDefect in q901 08n80c3The tip I saw ak, I didn't have the 08n80c3 and I put the p6nk90zepRibamix
LGOM4560
Does not turn on, power supply inoperative.I checked the resistors that my friends had already given me a tip about, they were ok, the defect was the IC901 having a short in the power supply.
LG32LN5400
Doesn't startPower supplyIc101 (ssc1s311a), r107 (22Ω), r108 (100Ω), q101 (mdf11n65b), c102 (330pf 1kv), f100 (t5a h 250v) - em curto/abertosCarlos Modesto